The country's annual average temperature is 25 °C (77 °F). Temps are cooler in the higher elevations while near sea level the average temperatures reach 28 °C (82.4 °F). In some of the low lying valleys high temperatures near 40 °C (104 °F) are common.

January and February are the coolest months of the year, while August is the hottest month. There have been reports of occasional snowflakes on the top of the Pico Duarte.

The wet season along the northern coast lasts from November through January. Elsewhere, the wet season stretches from May through November, with May being the wettest month.

In the months of August, September and October, hurricanes do strike the country on occasion, with most damaging the southern coast.